TFM consisted in taking part and learning about all different stages of app development: developing a script, performing the graphics, programming and marketing. For this reason I made an internship in the company Factory Interactive SL. During this period I did some scripts for apps related to mathematics and I programmed a part of the app "Dress up". Finally I uplaoded this app to Google Play store. The app is accesible by this link in Google Play https://play.google.com/store/apps/details?id=eu.lafactoria.dressup&hl=es